Zimlets can be deployed and undeployed from the administration console. The Zimlets pane lists all the Zimlets that are installed and shows whether the Zimlet is enabled or not. You can allow access to the enabled Zimlets by domain, and you can configure COSs and individual accounts to allow access to Zimlets. See the
Working with Zimlets chapter for information about Zimlets.
You can create custom modules to add to the Zimbra administration console user interface. You can use the administration console to easily upload and install your modules.